No Script Install Popup Shown

[moonpilot]

Firstly thanks for the excellent scripts Mental  

Ive got a problem: when I try to install scripts I dont get the install pop up like this:




I get a page of code instead (the contents of the script). This isnt a major problem, as I just copy and paste the code in, but would be more convenient if could simply click on Install! Also the script doesnt update automatically.

I expect its some option in Firefox or Greasemonkey Im missing, but if anyone knows how to fix this it would be much appreciated.

Thanks!